What is your favorite anti-religion quote?

"I call Christianity the one great curse, the one great intrinsic depravity, the one great instinct for revenge for which no expedient is sufficiently poisonous, secret, subterranean, petty — I call it the one immortal blemish of mankind"

"When it comes to bullshit, big-time, major league bullshit, you have to stand in awe of the all-time champion of false promises and exaggerated claims, religion. No contest. No contest. Religion. Religion easily has the greatest bullshit story ever told. Think about it. Religion has actually convinced people that there's an invisible man living in the sky who watches everything you do, every minute of every day. And the invisible man has a special list of ten things he does not want you to do. And if you do any of these ten things, he has a special place, full of fire and smoke and burning and torture and anguish, where he will send you to live and suffer and burn and choke and scream and cry forever and ever 'til the end of time!

But He loves you. He loves you, and He needs money! He always needs money! He's all-powerful, all-perfect, all-knowing, and all-wise, somehow just can't handle money! Religion takes in billions of dollars, they pay no taxes, and they always need a little more. Now, you talk about a good bullshit story. Holy Shit!"

Shake off all the fears of servile prejudices, under which weak minds are servilely crouched. Fix reason firmly in her seat, and call on her tribunal for every fact, every opinion. Question with boldness even the existence of a God; because, if there be one, he must more approve of the homage of reason than that of blindfolded fear.
Thomas Jefferson

The God of the Old Testament is arguably the most unpleasant character in all fiction: jealous and proud of it; a petty, unjust, unforgiving control-freak; a vindictive, bloodthirsty ethnic cleanser; a misogynistic, homophobic, racist, infanticidal, genocidal, fili-cidal, pestilential, megalomaniacal, sadomasochistic, capriciously malevolent bully. Those of us schooled from infancy in his ways can become desensitized to their horror.
Richard Dawkins